[FIXED] H2 database: NULL not allowed for column "ID" when inserting record using jdbcTemplate

Issue

I use hibernate's hbm2ddl to generate schema automatically. Here is my domain:

@Entity
public class Reader {

  @Id
  @GeneratedValue(strategy=GenerationType.AUTO)
  Long id;

  @Column(nullable=false,unique=true)
  String name;

  @Enumerated(EnumType.STRING)
  Gender gender;

  int age;

  Date registeredDate = new Date();

// getter and setter ...
}

When I using hibernate to save a reader, it works fine as expected as it generats a id to the reader . However when I use jdbcTemplate to insert a record with pure SQL, it report an error:

org.springframework.dao.DataIntegrityViolationException: StatementCallback; 
SQL [insert into reader(name,gender,age) values('Lily','FEMALE',21)]; 
NULL not allowed for column "ID"; 
    SQL statement:insert into reader(name,gender,age) values('Lily','FEMALE',21) [23502-192]; 
nested exception is org.h2.jdbc.JdbcSQLException: NULL not allowed for column "ID"; 
    SQL statement:  insert into reader(name,gender,age) values('Lily','FEMALE',21) [23502-192]

How to solve this?

1. I debug to find that the DDL of hb2ddl generated is create table Book (id bigint not null, author varchar(255), name varchar(255), price double not null, type varchar(255), primary key (id)). It seems that the hiberate handle the id stratege in its own way but how?
2. The @GeneratedValue(strategy=GenerationType.AUTO) should generate auto increment in the statement of the DDL but I didn't find that. Did I miss it?

Solution

Try to use strategy=GenerationType.IDENTITY instead of the strategy=GenerationType.AUTO

Also could be wrong hibernate.dialect Try the

hibernate.dialect=org.hibernate.dialect.H2Dialect

Answered By - StanislavL
Answer Checked By - Willingham (JavaFixing Volunteer)